added wxXXXDash, platform dependant types for all ports
made using native dialogs the default in msw/setup0.h
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6652 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Improvements to doc/view on MDI, including multiple menus for wxFileHistory.
Added wxDirExists to wxMSW; moved wxMatchWild to filefn.cpp
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@740 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775